/Engine/Source/Developer/TargetDeviceServices/Public/ITargetDeviceProxy.h
Cancel the application running on the device
true if the launch has been successfully terminated, false otherwise.
bool TerminateLaunchedProcess ( [FName](API\Runtime\Core\UObject\FName) InVariant, const [FString](API\Runtime\Core\Containers\FString) & ProcessIdentifier )